JP3470339B2 - Inner blade of reciprocating electric razor - Google Patents
Inner blade of reciprocating electric razorInfo
- Publication number
- JP3470339B2 JP3470339B2 JP30339592A JP30339592A JP3470339B2 JP 3470339 B2 JP3470339 B2 JP 3470339B2 JP 30339592 A JP30339592 A JP 30339592A JP 30339592 A JP30339592 A JP 30339592A JP 3470339 B2 JP3470339 B2 JP 3470339B2
- Authority
- JP
- Japan
- Prior art keywords
- inner blade
- blade
- press
- cutting edge
- molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Dry Shavers And Clippers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、往復式電気かみそりの
内刃に関し、詳しくはプレス成形に伴う内刃ブレードに
波及する問題を解消しようとする技術に係るものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner blade of a reciprocating electric shaver, and more particularly to a technique for solving the problem of spreading to the inner blade due to press molding .
【０００２】[0002]
【従来の技術】従来、図４（ｂ）に示すように、往復式
電気かみそりの内刃ブレード２の刃先エッジ１の切れ味
を高めるために、内刃ブレード２の両側にプレス金型を
配置し、プレス成形にて材料を押圧してその押圧個所の
材料を押出して塑性変形をおこなう、いわゆるつかし
（尽かし）成形をおこなうのである。そして、内刃ブレ
ード２には図４（ａ）のように、円形の髭屑排出孔６の
複数個が形成され、そして、内刃刃先角α１は約８８°
であった。2. Description of the Related Art Conventionally, as shown in FIG. 4B, in order to improve the sharpness of the cutting edge 1 of the inner blade 2 of a reciprocating electric shaver, press dies are arranged on both sides of the inner blade 2. That is, what is called exhaustion (exhaustion) molding is performed in which the material is pressed by press molding and the material at the pressed portion is extruded to perform plastic deformation. Then, as shown in FIG. 4A, a plurality of circular bead discharging holes 6 are formed in the inner blade 2, and the inner blade edge angle α 1 is about 88 °.
Met.
【０００３】[0003]
【発明が解決しようとする課題】かかる場合、プレス成
形による材料の押出量、つまり、つかし量は少なくて、
悪影響は少なかったが、刃先エッジ１の切れ味を一層高
めるために、図４（ｃ）のように、プレス成形において
その内刃刃先角α２を小さくするとつかし量が多くなっ
て、歪み変形が生じる。つまり、材料が押し出されて図
４（ａ）の髭屑排出孔６，６の間のＮ部分に歪み変形が
集中する。すると、図４（ｃ）のようにＮ部分を中心に
凸状態になり、最悪の場合、亀裂破損することがある。
更に内刃ブレード２・・を内刃基台３に複数枚並設する
ように成形するのに、内刃ブレード２を成形機にかける
場合に、歪み変形部分が引っ掛かってセットすることが
できず、内刃ブレード２・・を備えた内刃基台３の成形
が困難になるなどという問題があった。In such a case, press forming
The amount of material extruded according to the shape
Although the adverse effect was small, in order to further improve the sharpness of the cutting edge 1, as shown in FIG. 4 (c), if the inner blade cutting edge angle α 2 is decreased in press molding , the amount of misuse becomes large and the strain deformation occurs. Occurs. That is, the material is extruded, and the strain deformation concentrates on the N portion between the beard scrap discharge holes 6 and 6 in FIG. Then, as shown in FIG. 4C, a convex state is formed around the N portion, and in the worst case, crack damage may occur.
Further, when forming the inner blade blades 2 ... In parallel with the inner blade base 3, when the inner blade blades 2 are put on a molding machine, the strain-deformed portion is caught and cannot be set. However, there is a problem that it becomes difficult to form the inner blade base 3 provided with the inner blades 2 ...
【０００４】本発明はこのような問題に鑑みてなされた
ものであり、その目的とするところは、切れ味を高める
ために内刃ブレードにプレス成形をおこなって刃先エッ
ジにおける切れ味を高めながら、プレス成形により生じ
る歪み変形の問題を回避することができる往復式電気か
みそりの内刃を提供することにある。[0004] The present invention has been made in view of such problems, and an object, while increasing the sharpness of the cutting edge by performing press forming on inner cutter blades in order to enhance the sharpness, press molding An object of the present invention is to provide an inner blade of a reciprocating electric razor capable of avoiding the problem of distortion and deformation caused by.
【０００５】[0005]
【課題を解決するための手段】本発明は、刃先部にプレ
ス成形が施されて刃先エッジ１が形成された内刃ブレー
ド２を内刃基台３に複数枚並設した往復式電気かみそり
の内刃であって、内刃ブレード２においてプレス成形さ
れた領域Ｔの略全長にわたる長孔５を形成して成ること
を特徴とするものである。Means for Solving the Problems The present invention, pre-the cutting edge
A inner cutter of a reciprocating electric shaver scan molding has plural juxtaposed in inner cutter blade 2 an inner blade base 3 cutting edge 1 is formed is subjected, it is press-formed in the inner cutter blade 2 <br It is characterized in that the elongated hole 5 is formed over substantially the entire length of the region T.
【０００６】また、刃先部にプレス成形が施されて刃先
エッジ１が形成された内刃ブレード２を内刃基台３に複
数枚並設した往復式電気かみそりの内刃であって、刃先
エッジ１側におけるプレス成形によるつかし量よりも刃
先エッジ１側とは反対側のつかし量を少なくして成るこ
とを特徴とするものである。Further, an inner blade of a reciprocating electric shaver in which a plurality of inner blades 2 each having a blade edge 1 formed by press-molding a blade edge portion are arranged side by side on an inner blade base 3, It is characterized in that the amount of contact on the side opposite to the cutting edge 1 side is smaller than the amount of contact on the side 1 by press molding .
【０００７】[0007]
【作用】プレス成形にて内刃ブレード２の刃先エッジ１
を先鋭にして切れ味を高めるものでありながら、プレス
成形に伴って生じる歪み変形に対しては、プレス成形さ
れた領域Ｔの略全長にわたる長孔５の孔縁部の変形にて
吸収する。しかして、プレス成形に伴う歪み変形にて内
刃ブレード２が損壊されたり、大きく変形されて内刃基
台３による一体成形を阻害するようなこともない。しか
も長孔５において良好に髭屑を排出するのである。[Operation] Edge edge 1 of inner blade 2 by press molding
The in the sharp, yet those that enhance the sharpness, press
The strain deformation caused by the molding is absorbed by the deformation of the hole edge portion of the long hole 5 over substantially the entire length of the press-molded region T. However, the inner blade 2 is not damaged or greatly deformed by the strain deformation caused by the press molding , and the inner blade base 3 does not hinder the integral molding. Moreover, the whiskers are satisfactorily discharged in the long holes 5.
【０００８】また、プレス成形にて内刃ブレード２の刃
先エッジ１を先鋭にして切れ味を高めるものでありなが
ら、刃先エッジ１側とは反対側のつかし量を少なくし
て、プレス成形に伴って生じる歪み変形を抑制する。し
かして、プレス成形に伴う歪み変形にて内刃ブレード２
が損壊されたり、大きく変形されて内刃基台３による一
体成形を阻害するようなことがない。Further, despite which enhance the sharpness in the sharp cutting edge the edge 1 of the inner cutter blade 2 by press molding, by reducing the amount Tsukashi opposite the cutting edge 1 side, with the press-molding Strain deformation that occurs as a result is suppressed. Then, the inner blade 2 is deformed by the strain deformation caused by the press forming.
Will not be damaged or greatly deformed and hinder the integral molding by the inner blade base 3.
【０００９】[0009]
【実施例】以下本発明の実施例を図面に基づいて詳述す
る。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１０】図１に本発明の全体図を示す。特に、内刃
７の半径が小さい双頭（２ヘッド）形態の往復式電気か
みそりを示している。つまり、ネット状の外刃８が例え
ば揺動昇降自在になされたキャリア９に取付けられ、押
上げばねにて弾発された内刃基台３に適宜間隔を隔てて
内刃７となる内刃ブレード２・・が多数個取付けられ、
本体側に設けられて往復駆動される摺動子１０に内刃基
台３が保持され、摺動子１０の往復駆動力によって、内
刃基台３に保持されている内刃ブレード２を外刃８に摺
接させて往復駆動することができるようにしてある。こ
のような往復式電気かみそりの形態は種々設計変更可能
である。FIG. 1 shows an overall view of the present invention. In particular, a reciprocating electric razor having a double-head (two-head) shape in which the radius of the inner blade 7 is small is shown. That is, the net-shaped outer blade 8 is attached to, for example, a carrier 9 that can be swung up and down, and an inner blade 7 is formed at an appropriate interval on the inner blade base 3 that is repulsed by a push-up spring. A large number of blades 2 ...
The inner blade base 3 is held by a slider 10 provided on the main body side and reciprocally driven, and the inner blade blade 2 held by the inner blade base 3 is removed by the reciprocating driving force of the slider 10. The blade 8 can be slidably contacted and reciprocally driven. The form of such a reciprocating electric shaver can be modified in various ways.
【００１１】図２は内刃７を示し、図３（ａ）（ｂ）は
内刃ブレード２の製作説明図を示している。つまり、板
状で略Ｕ字型に打抜かれた刃材１１がプレス成形機にセ
ットされて刃材１１の両側のプレス金型Ｄ，Ｄを近接す
るようにして、プレス成形をおこなうのであり、かかる
場合、プレス成形にて材料を押圧してその押圧個所の材
料を図３（ａ）の点線で示す域Ｘ，Ｙのように押出すの
である。そして、切削線Ｚにまで刃材１１を切削して、
刃先エッジ１を形成するのである。かかる場合、内刃ブ
レード２においてプレス成形された領域Ｔの略全長にわ
たる長孔５を形成してある。FIG. 2 shows the inner blade 7, and FIGS. 3 (a) and 3 (b) show how the inner blade 2 is manufactured. That is, the plate-shaped punched blade material 11 is set in the press molding machine so that the press dies D on both sides of the blade material 11 are brought close to each other, and press molding is performed. Take
In this case, the material is pressed by press molding and the material at the pressed portion is extruded as shown by the regions X and Y shown by the dotted line in FIG. Then, the blade material 11 is cut to the cutting line Z,
The cutting edge 1 is formed. In this case, the long hole 5 is formed over substantially the entire length of the region T press-formed in the inner blade 2.
【００１２】このように、内刃ブレード２においてプレ
ス成形された領域Ｔの略全長にわたる長孔５を形成する
ことで、プレス成形にて内刃ブレード２の刃先エッジ１
を先鋭にして切れ味を高めるものでありながら、プレス
成形に伴って生じる歪み変形に対しては、プレス成形さ
れた領域Ｔの略全長にわたる長孔５の孔縁部の変形にて
吸収するのであり、プレス成形に伴う歪み変形にて内刃
ブレード２が損壊されたり、大きく変形されて内刃基台
３による一体成形を阻害するようなこともない。そし
て、長孔５において良好に髭屑を排出するのである。[0012] Pre Thus, in the inner cutter blade 2
By forming the long hole 5 over substantially the entire length of the region T formed by the press forming , the edge 1 of the inner blade 2 is formed by press forming .
The in the sharp, yet those that enhance the sharpness, press
For strain deformation caused by the molding, it is to absorb at deformation of the hole edges of the long holes 5 over substantially the entire length of the press-molded of <br/> region T, the strain deformation caused by press-molding Therefore, the inner blade 2 is not damaged or deformed to a large extent to prevent the inner blade base 3 from being integrally molded. Then, the whiskers are satisfactorily discharged in the long holes 5.
【００１３】ところで、プレス成形された領域Ｔにわた
る長孔５を形成すると、内刃ブレード２の剛性が低下
し、内刃ブレード２の固有振動数が低下し、髭を切断し
た特に発生する剃り音を大きくすることができる。しか
しながら、内刃ブレード２の剛性が下がることにより、
切れ味が悪くなるため、図２（ａ）に示すように、内刃
７の内刃基台３の中央部の内刃ブレード２の支持部ａ１
と、この中央部の支持部ａ1 と両端部の間の支持部
ｂ１，ｂ２の数枚のものの高さを他のものの高さよりも
高くし、このように支持部ａ１，ｂ１，ｂ２の高さを高
くすることで、髭の剃り音が小さくなるが、良く剃られ
る中央部付近を含む３個所での切れ味を良くすることが
できる。When the elongated hole 5 extending over the press-formed region T is formed, the rigidity of the inner blade 2 is reduced, the natural frequency of the inner blade 2 is reduced, and the shaving noise generated when the beard is cut is generated. Can be increased. However, since the rigidity of the inner blade 2 is lowered,
Since the sharpness becomes poor, as shown in FIG. 2A, the supporting portion a 1 of the inner blade 2 at the center of the inner blade base 3 of the inner blade 7
And the height of some of the support portions a 1 at the central portion and the support portions b 1 and b 2 between the both ends is made higher than the height of the others, and thus the support portions a 1 , b 1 , by increasing the height of b 2, although beard shaving sound is small, it is possible to improve the sharpness of the three points including the central portion near being shaved well.
【００１４】図３（ｃ）は他の実施例を示していて、刃
先エッジ１側におけるプレス成形によるつかし量よりも
刃先エッジ１側とは反対側のつかし量を少なくしたもの
である。具体的には、刃先エッジ１側におけるプレス成
形域Ａに比べて刃先エッジ１側とは反対側のプレス成形
域Ｂを少なくしたものである。かかる場合、角度β１＞
β２の関係になっている。FIG. 3C shows another embodiment, in which the amount of care on the side opposite to the cutting edge 1 is made smaller than the amount of press molding on the cutting edge 1 side. Specifically, press forming on the edge 1 side
Press forming on the side opposite to the cutting edge 1 side compared to shape area A
The area B is reduced. In such a case, the angle β 1 >
It has a relationship of β 2 .
【００１５】[0015]
【発明の効果】本発明は上述のように、内刃ブレードに
おいてプレス成形された領域の略全長にわたる長孔を形
成してあるから、プレス成形にて内刃ブレードの刃先エ
ッジを先鋭にして切れ味を高めるものでありながら、プ
レス成形に伴って生じる歪み変形に対しては、プレス成
形された領域の略全長にわたる長孔の孔縁部の変形にて
吸収することができ、プレス成形に伴う歪み変形にて内
刃ブレードが損壊されたり、大きく変形されて内刃基台
による一体成形を阻害するようなこともなく、しかも長
孔において良好に髭屑を排出できるという利点がある。According to the present invention as described above, since the inner cutter blade is formed with long holes over substantially the entire length of the press-molded regions, sharpness and the sharp cutting edge the edge of the inner blade blade by press molding while it is intended to increase, up
Press- molding against the strain deformation that accompanies the
It can be absorbed by the deformation of the hole edge of the long hole over the entire length of the shaped area, and the inner blade blade is damaged or greatly deformed by the strain deformation caused by press molding and integrated by the inner blade base. There is an advantage that whiskers can be satisfactorily discharged in the long hole without obstructing the molding.
【００１６】また、刃先エッジ側におけるプレス成形に
よるつかし量よりも刃先エッジ側とは反対側のつかし量
を少なくしたから、プレス成形にて内刃ブレードの刃先
エッジを先鋭にして切れ味を高めるものでありながら、
刃先エッジ側とは反対側のつかし量を少なくして、プレ
ス成形に伴って生じる歪み変形を抑制し、プレス成形に
伴う歪み変形にて内刃ブレードが損壊されたり、大きく
変形されて内刃基台による一体成形を阻害するようなこ
とをなくすことができるという利点がある。Further, since the cutting edge side than the quantity Tsukashi by <br/> for press molding in the cutting edge side is reduced amount Tsukashi opposite, sharp cutting edges edge of the inner blade blade by press molding While improving the sharpness,
The cutting edge side with less amount Tsukashi opposite, pre
It is possible to suppress the strain deformation that occurs due to the press forming , and to prevent the inner blade from being damaged or largely deformed by the press deformation due to the press forming , which hinders the integral forming by the inner blade base. There is an advantage.
【図１】本発明の一実施例の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】同上の内刃を示し、（ａ）は一部破断した正面
図、（ｂ）は側面図である。FIG. 2 is a front view showing a partially cutaway inner blade of the same, and FIG. 2 (b) is a side view.
【図３】同上のプレス成形作用を示し、（ａ）は作用を
説明する断面図、（ｂ）は作用を説明する正面図、
（ｃ）は他のプレス成形作用を説明する断面図である。3A and 3B show the same press-molding operation, FIG. 3A is a sectional view for explaining the operation, and FIG. 3B is a front view for explaining the operation.
(C) is a cross-sectional view illustrating another press-molding action.
【図４】従来例を示し、（ａ）は正面図、（ｂ）（ｃ）
はプレス成形作用を示す説明図である。FIG. 4 shows a conventional example, (a) is a front view, and (b) and (c).
FIG. 6 is an explanatory view showing a press forming action.
１ 刃先エッジ ２ 内刃ブレード ３ 内刃基台 ５ 長孔 Ｔ プレス成形された領域1 Cutting Edge 2 Inner Blade 3 Inner Blade Base 5 Long Hole T Press Formed Area
フロントページの続き (56)参考文献 特開 昭60−168484（ＪＰ，Ａ) 特開 昭51−49857（ＪＰ，Ａ) 特開 昭54−38857（ＪＰ，Ａ) 特開 昭50−96363（ＪＰ，Ａ) 実開 昭58−122571（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B26B 19/04 Continuation of front page (56) Reference JP-A-60-168484 (JP, A) JP-A-51-49857 (JP, A) JP-A-54-38857 (JP, A) JP-A-50-96363 (JP , A) Actual development Sho 58-122571 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B26B 19/04
Claims (2)
ジが形成された内刃ブレードを内刃基台に複数枚並設し
た往復式電気かみそりの内刃であって、内刃ブレードに
おいてプレス成形された領域の略全長にわたる長孔を形
成して成ることを特徴とする往復式電気かみそりの内
刃。1. An inner blade of a reciprocating electric shaver, comprising a plurality of inner blades having a blade edge formed by press molding to form a blade edge on an inner blade base, the inner blade being pressed by the inner blade. inner cutter of a reciprocating electric shaver, characterized in that over substantially the entire length of the shaped region by forming a long hole.
ジが形成された内刃ブレードを内刃基台に複数枚並設し
た往復式電気かみそりの内刃であって、刃先エッジ側に
おけるプレス成形によるつかし量よりも刃先エッジ側と
は反対側のつかし量を少なくして成ることを特徴とする
往復式電気かみそりの内刃。2. A inner cutter of a reciprocating electric shaver press forming the cutting edge portion has a plurality arranged on the inner blade base an inner cutter blade cutting edge is formed is subjected, press the cutting edge side An inner blade of a reciprocating electric shaver, characterized in that the amount of margin on the side opposite to the cutting edge side is smaller than the amount of margin formed by molding .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30339592A JP3470339B2 (en) | 1992-11-13 | 1992-11-13 | Inner blade of reciprocating electric razor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30339592A JP3470339B2 (en) | 1992-11-13 | 1992-11-13 | Inner blade of reciprocating electric razor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06142347A JPH06142347A (en) | 1994-05-24 |
| JP3470339B2 true JP3470339B2 (en) | 2003-11-25 |
Family
ID=17920511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30339592A Expired - Fee Related JP3470339B2 (en) | 1992-11-13 | 1992-11-13 | Inner blade of reciprocating electric razor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3470339B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951056B2 (en) | 2001-08-10 | 2005-10-04 | Matsushita Electric Works, Ltd. | Electric razor inner blade unit |
| JP4775152B2 (en) | 2006-07-21 | 2011-09-21 | パナソニック電工株式会社 | Inner blade for electric shaver and method for determining its shape |
-
1992
- 1992-11-13 JP JP30339592A patent/JP3470339B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06142347A (en) | 1994-05-24 |
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